#include <stdio.h>
#include <stdlib.h>

/**
 * Note: The returned array must be malloced, assume caller calls free().
 */
int* twoSum(int* nums, int numsSize, int target, int* returnSize) {
    for(int i = 0; i < numsSize ; i++) {
        for(int j = i + 1; j < numsSize; j++) {
            if((nums[i] + nums[j]) == target) {
                int *ret = malloc(sizeof(int) * 2);
                ret[0] = i;
                ret[1] = j;
                *returnSize = 2;
                return ret;
            }
        }
    }

    return NULL;
}